Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a liderança para a empresa de pesquisa de resultados eleitorais e tem um PSOE de 39,6% 175?
 ###Tabelas: CREATE TABLE opinion_polls (opinion_polls_id AUTO_INCREMENT PRIMARY KEY, Polling Firm VARCHAR, Date VARCHAR, Link VARCHAR, PSOE VARCHAR, Others VARCHAR, Lead VARCHAR) CREATE TABLE percussion_scholastic_concert_open_class (percussion_scholastic_concert_open_class_id AUTO_INCREMENT PRIMARY KEY, Ensemble VARCHAR, Gold Medals INT, Silver Medals INT, Bronze Medals INT, Total Medals INT) CREATE TABLE champions_tour_wins_45 (champions_tour_wins_45_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Winning score VARCHAR, Margin of victory VARCHAR, Runner(s)-up VARCHAR) CREATE TABLE mintage_figures (mintage_figures_id AUTO_INCREMENT PRIMARY KEY, Year INT, $10 – 1/10 oz. VARCHAR, $25 – 1/4 oz. INT, $50 – 1/2 oz. INT, $100 – 1 oz. VARCHAR) CREATE TABLE number_of_children_involved_in_ilo_categories_of_work_by_age_and_gender (number_of_children_involved_in_ilo_categories_of_work_by_age_and_gender_id AUTO_INCREMENT PRIMARY KEY, All Children ('000s) INT, Economically Active Children ('000s) INT, Economically Active Children (%) INT, Child Labour ('000s) INT, Child Labour (%) INT, Children In Hazardous Work ('000s) INT, Children In Hazardous Work (%) INT)  
SELECT Lead FROM opinion_polls WHERE Polling Firm = election results AND PSOE = 39.6% 175